Common Name: WATERWORT FAMILY Habit: Annual, short-lived perennial herb, in or near water; roots fibrous, from taproot or not, generally from lower leaf axils also. Stem: generally soft. Leaf: simple, opposite, +- 4-ranked; stipules scarious. Inflorescence: flowers in upper axils, 1 or few in clusters. Flower: small, inconspicuous, radial, bisexual; sepals, petals 2--5, equal in number, generally free; ovary spheric, styles 3--5, short. Fruit: capsule, septicidal, +- spheric, ovoid, or depressed-ovoid, walls thin; chambers 2--5, each several to many-seeded. Seed: small; surface net-like or glossy. Genera In Family: 2 genera, 50 species: +- worldwide. eFlora Treatment Author: Gordon C. Tucker & Evanielis U. Grissom Scientific Editor: Thomas J. Rosatti.
Common Name: WATERWORT Stem: Erect underwater, +- prostrate on wet ground, branched or not; base not woody. Leaf: petiole < 1/3 blade, flat, +- blade-like; blades narrow-elliptic to +- round, +- entire, bases wedge-shaped to +- round, tips round. Inflorescence: flowers 1(2) per node. Flower: sepals, petals wide-elliptic, membranous; sepals pale green; petals pale green-white; stamens (1) 3, 6, 8, filaments 1/2 × to +- equal petals, anthers wide-ovoid; styles 3--4. Fruit: +- spheric or depressed-ovoid; chambers 3--4, each 3--15-seeded; pedicel generally +- 0. Seed: +- visible through fruit wall, elliptic, straight or curved, brown to yellow-brown; surface net-like due to ridges between +- linear rows of pits. Etymology: (Greek: fir tree, from a European species that suggests such a plant in miniature) Note: At least 20× magnification needed for pits on seeds.
Elatine brachysperma A. Gray
NATIVE Stem: decumbent to erect, 1--5(12) cm. Leaf: narrow-oblong to ovate; petiole 1/4--1/3 blade or indistinct. Inflorescence: flowers 1 per node. Flower: sepals 2, +- equal, or 3, 1 < others; petals 3, equal, +- wider than sepals; stamens 3, alternate petals. Fruit: chambers 3. Seed: wide-oblong, curved +- 15°; pits 10--15 per row, wider than long. Ecology: Muddy shores, shallow pools; Elevation: 50--500 m. Bioregional Distribution: CA; Distribution Outside California: central and southern United States, Mexico. Flowering Time: Apr--Sep Synonyms: Elatine obovata (Fassett) H. Mason Jepson eFlora Author: Gordon C. Tucker & Evanielis U. Grissom Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Elatine ambigua Next taxon: Elatine californica
Botanical illustration including Elatine brachysperma
Citation for this treatment: Gordon C. Tucker & Evanielis U. Grissom 2012, Elatine brachysperma, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=23917, accessed on April 23, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2024.
No expert verified images found for Elatine brachysperma.
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